Senior Microsoft Cloud Security Engineer

Relha LLC; Arlington, Northern (VA, KY); Hybrid; USD 132,000 - 290,000; Full time

Job summary

CACI is seeking a Senior Microsoft Cloud Security Engineer to deploy, manage, and harden our Microsoft cloud environment, including Azure, Office 365 and Microsoft 365. You will collaborate with security engineers, cloud architects, identity teams, and incident response analysts to ensure our tenant is resilient and compliant.

The role requires expert knowledge of CAPs, Defender, Purview, and Azure Sentinel; a track record of secure cloud design and strong communication skills.

Qualifications

• Ability to Obtain DHS EOD Public Trust Clearance.
• Advanced degree with extensive cloud security expertise.
• Expert Microsoft cloud deployment, management, and security.
• Deep knowledge of Conditional Access and Zero Trust concepts.
• Proven Defender, Purview, and DLP/eDiscovery experience.
• Strong KQL skills for detection, investigation, and response.
• Relevant security certifications such as MSCE, etc.

Responsibilities

• Secure Microsoft cloud tenant across Azure, O365, and M365.
• Lead development and enforcement of Conditional Access Policies.
• Optimize Defender for Endpoint/Cloud/Identity/Office 365.
• Implement Purview with DLP and eDiscovery workflows.
• Design and run KQL queries for Azure Sentinel and log analytics.
• Remediate security controls via assessments and pentests.
• Guide cross‑functional teams on governance and compliance.

Skills

Azure

Entra

Defender

Purview

Office 365

Microsoft 365

KQL

Zero Trust

CAPs

Security certifications

Cloud security

Threat hunting

Education

Master’s Degree + 10 years’ experience

Bachelor’s degree + 13 years

19 years total experience

Tools

Splunk

Microsoft Sentinel

CASBs

NIST frameworks

Job description

Senior Microsoft Cloud Security Engineer

Job Title: Senior Microsoft Cloud Security Engineer

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: None

Employee Type: Regular

Percentage of Travel Required: None

Type of Travel: None

The Opportunity:

CACI has an exciting position for a Senior Microsoft Cloud Security Engineer as we deploy, manage, and hardening our Microsoft cloud environment, including Azure, Office 365 and Microsoft 365. The Senior Microsoft Cloud Security Engineer should thrive on complexity, possess an analytical mindset, and bring deep expertise on managing and securing Microsoft’s cloud platform. You’ll collaborate across teams, collaborating with security engineers, cloud architects, identity teams, and incident response analysts to ensure our tenant is resilient, compliant, and always mission ready.

Responsibilities:

• Serve as the go-to, subject matter expert (SME) for securing the Microsoft cloud tenant, advising on architecture, design, and implementation of secure solutions across Azure, O365, and M365.
• Lead the development and enforcement of Conditional Access Policies, aligned with best practices for managing access control for personas, groups, and applications.
• Act as the primary SME in optimizing the Microsoft Defender suite of components (Defender for Endpoint, Defender for Cloud, Defender for Identity, and Defender for Office 365)
• Implement Microsoft Purview, including data classification and sensitivity labels, Data Loss Prevent (DLP), and eDiscovery workflows.
• Design, run and optimize Kusto Query Language (KQL) queries for Azure Sentinel, Defender, and log analytics.
• Review and remediate security controls through vulnerability assessments, penetration tests, and red/blue team engagements.
• Guide cross-functional teams on security controls, compliance requirements, policy, and governance best practices

Qualifications:

Required:

• Ability to Obtain DHS EOD Public Trust Clearance
• Master’s Degree + 10 years’ experience OR Bachelor’s degree + 13 years OR 19 years total experience
• Expert-level hands‑on experience deploying, managing, and securing Azure, Entra, Defender, Purview, Office 365, and Microsoft 365 in large enterprises.
• Deep understanding of Conditional Access Policies (CAPs), Azure AD/Entra, and Zero Trust principles.
• Proven Track record implementing and managing the full suite of the Microsoft Defender ecosystem and Microsoft Purview (DLP, sensitivity labels, eDiscovery)
• Advanced proficiency writing KQL for detection, investigation, response, and reporting
• Active, expert-level certification such as Microsoft Certified Solutions Expert (MSCE), Microsoft 365 Admin Expert, Microsoft Cybersecurity Architect Expert, AZ-900, AZ-500, SC-900, SC-100, SC-200, SC-300, SC-400, SC-401
• Cybersecurity certifications: Security+
• Strong networking, firewall, VPN, and segmentation knowledge as it relates to cloud deployments
• Exceptional time management, written and communication skills.
• CISSP, OSCP, GCIH
• ITIL, Agile, or PMP familiarity/certification
• Experience with SOAR platforms (e.g. Splunk, Microsoft Sentinel)
• Hands‑on exposure to third‑party cloud security tooling (CASBs, CNAAPs, SD-WANs)
• Previous consulting or client‑facing delivery experience

What You Can Expect:

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high‑performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation’s most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$131,800 - $290,000

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.